Continuous casting quick-change connecting piece

Abstract

The utility model relates to the technical field of steel and iron casting, in particular to a continuous casting quick-change connecting piece which comprises a long rod, and a plurality of notches arranged in the radial direction are formed in the long rod in the length direction. The short rod A is fixedly connected to one end of the long rod in the radial direction; the short rod B is fixedly connected to the other end of the long rod in the radial direction; wherein the whole connecting piece is arranged in a Z shape. A conventional round steel quick-change connecting piece is arranged to be the Z-shaped connecting piece, and the notches are formed in the connecting piece, so that during quick change, crystal attachment positions can be provided at the upper Z-shaped position and the lower Z-shaped position of the connecting piece, steel drawing is more stable, and meanwhile the connecting piece is integrally formed and convenient to manufacture.

Description

Technical Field

[0001] The utility model relates to the technical field of steel casting, in particular to a continuous casting quick-change connector. Background Art

[0002] Continuous casting is the process in which molten steel continuously solidifies from liquid to solid in the tundish and crystallizer at a certain pulling speed. The tundish has a service life and usually needs to be taken offline after 5-10 hours. After the tundish is taken offline, the molten steel can no longer be cast, resulting in casting interruption. After the tail billet is pulled out, it can only wait for the next tundish to be put online before pouring can continue from the beginning. The time to change the tundish will take about 1 hour, and production efficiency will be reduced.

[0003] The quick change of continuous casting is to keep the tail billet of the previous tundish in the crystallizer without pulling it away. The tail billet remains in the crystallizer. While the last part of the molten steel in the tail billet has not yet completely solidified, a connecting piece is used to insert it into the unsolidified molten steel of the tail billet, so that half of the connecting piece is inserted into the unsolidified molten steel of the tail billet. When the next tundish is poured, new molten steel is added to the crystallizer to solidify the upper part of the connecting piece. In this way, the upper and lower parts of molten steel come from the two front and rear tundishes respectively, and can be connected together through the connecting piece, thereby realizing continuous casting without pulling the tail billet and then pouring, saving one hour of production time each time.

[0004] The existing connectors currently used are plain round steel bars. The liquidus temperature of high-carbon steel is low. During the short emergence time, the molten steel cannot be firmly combined with the connectors, resulting in leakage of the ingot out of the crystallizer after starting, resulting in connection failure.

[0005] Therefore, a continuous casting quick-change connector is needed that can meet the use requirements. Utility Model Content

[0006] The purpose of the utility model is to provide a continuous casting quick-change connector, which can conveniently perform quick change on high carbon steel in the continuous casting process and has a simple structure and is easy to use.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A continuous casting quick-change connector, comprising:

[0009] A long rod, wherein the long rod is provided with a plurality of radially arranged notches along the length direction;

[0010] A short rod A, wherein the short rod A is radially fixedly connected to one end of the long rod;

[0011] A short rod B, wherein the short rod B is radially fixedly connected to the other end of the long rod;

[0012] Among them, the connecting piece is arranged in a Z shape as a whole.

[0013] A further improvement of the present invention is that the notches are evenly distributed along the length direction of the long rod.

[0014] A further improvement of the present invention is that the diameters of the long rod, short rod A and short rod B are 16-22 mm.

[0015] A further improvement of the present invention is that the length of the long rod is 400-600 mm, and the lengths of the short rods A and B are 1 / 8-1 / 6 of the length of the long rod.

[0016] A further improvement of the present invention is that the long rod, short rod A and short rod B are an integrated structure made of high carbon steel.

[0017] A further improvement of the present invention is that the depth of the notch is 1 / 3 to 1 / 2 of the diameter of the long rod, and the width is 5 to 15 mm.

[0018] The beneficial effects of the present invention are:

[0019] This patent converts conventional round steel quick-change connectors into Z-shaped connectors and provides notches on the connectors, so that when quick-changing, the upper and lower Z-shaped positions of the connectors can provide crystallization attachment positions, making steel pulling more stable. At the same time, it is formed in one piece for easy production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Combine Figure 1 It can be seen that a continuous casting quick-change connector includes:

[0023] A long rod 10, wherein the long rod 10 is provided with a plurality of radially arranged notches 101 along the length direction;

[0024] A short rod A20, the short rod A20 being radially fixedly connected to one end of the long rod 10;

[0025] A short rod B30, the short rod B30 being radially fixedly connected to the other end of the long rod 10;

[0026] Among them, the connecting piece is arranged in a Z shape as a whole.

[0027] A further improvement of the present invention is that the notches 101 are evenly distributed along the length direction of the long rod 10 .

[0028] A further improvement of the present invention is that the diameters of the long rod 10, the short rod A20 and the short rod B30 are 16-22 mm.

[0029] A further improvement of the present invention is that the length of the long rod 10 is 400-600 mm, and the lengths of the short rods A20 and B30 are 1 / 8-1 / 6 of the length of the long rod 10.

[0030] A further improvement of the present invention is that the long rod 10, the short rod A20 and the short rod B30 are an integrated structure made of high carbon steel.

[0031] A further improvement of the present invention is that the depth of the notch 101 is 1 / 3 to 1 / 2 of the diameter of the long rod 10 and the width is 5 to 15 mm.

[0032] Specifically, round steel is selected and bent, and the elbows at both ends are used as short rods A20 and short rod B30, each with a length of 4~5cm, and the long rod 10 is 45cm long. The diameter of the round steel is 18~20mm, and three notches 101 are cut along the length direction. Each notch 101 is 15cm apart, and the notch depth is about 8~10mm. The notches can be on the same side or on different sides. During quick change, before the original molten steel solidifies, the connector is inserted into the molten steel in the crystallizer so that the lower part contacts the molten steel in the crystallizer and the upper part leaks out. When the molten steel is poured into the crystallizer, the molten steel is combined with the upper elbow. At the same time, the front and rear molten steel are combined with the middle notched part, thereby doubly increasing the combination of the front and rear molten steel and the connector, ensuring that the quick change does not leak steel.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, are similarly included in the scope of patent protection of the present invention.

Claims

1. A continuous casting quick-change connector, characterized in that: include, A long rod (10), wherein the long rod (10) is provided with a plurality of radially arranged notches (101) along the length direction; A short rod A (20), the short rod A (20) being radially fixedly connected to one end of the long rod (10); A short rod B (30), the short rod B (30) being radially fixedly connected to the other end of the long rod (10); Among them, the connecting piece is arranged in a Z shape as a whole.

2. The continuous casting quick-change connector according to claim 1, characterized in that: The notches (101) are evenly distributed along the length direction of the long rod (10).

3. The continuous casting quick-change connector according to claim 1, characterized in that: The diameters of the long rod (10), short rod A (20) and short rod B (30) are 16-22 mm.

4. The continuous casting quick-change connector according to claim 3, characterized in that: The length of the long rod (10) is 400-600 mm, and the lengths of the short rods A (20) and B (30) are 1 / 8-1 / 6 of the length of the long rod (10).

5. The continuous casting quick-change connector according to claim 2, characterized in that: The long rod (10), short rod A (20) and short rod B (30) are an integrated structure and are made of high carbon steel.

6. The continuous casting quick-change connector according to claim 1, characterized in that: The depth of the notch (101) is 1 / 3 to 1 / 2 of the diameter of the long rod (10), and the width is 5 to 15 mm.

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